Finding the Fourth Proportional to 5,078.95, 7,010.30 and 3,090.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,078.95 : 7,010.30 = 3,090.15 : x
2. Step 2: Convert to fraction form
   5,078.95/7,010.30 = 3,090.15/x
3. Step 3: Cross multiply
   5,078.95x = 7,010.30 × 3,090.15
4. Step 4: Simplify right side
   5,078.95x = 21,662,886.27
5. Step 5: Solve for x
   x = 21,662,886.27/5,078.95
6. Step 6: Final answer
   x = 4,265.23